56591497 has 4 divisors (see below), whose sum is σ = 56615440. Its totient is φ = 56567556.

The previous prime is 56591489. The next prime is 56591501. The reversal of 56591497 is 79419565.

56591497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56591497 - 2³ = 56591489 is a prime.

It is a super-4 number, since 4×56591497⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56591407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7983 + ... + 13300.

It is an arithmetic number, because the mean of its divisors is an integer number (14153860).

Almost surely, 2^56591497 is an apocalyptic number.

It is an amenable number.

56591497 is a deficient number, since it is larger than the sum of its proper divisors (23943).

56591497 is a wasteful number, since it uses less digits than its factorization.

56591497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23942.

The product of its digits is 340200, while the sum is 46.

The square root of 56591497 is about 7522.7320170268. The cubic root of 56591497 is about 383.9285371391.

The spelling of 56591497 in words is "fifty-six million, five hundred ninety-one thousand, four hundred ninety-seven".